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phys 486 final
uiuc w/ prof beck
44
Physics
Undergraduate 4
12/14/2019

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Cards

Term
TDSE
Definition
[image]
Term
Probability of finding a particle between a and b at time t
Definition
[image]
Term
< x >
Definition
[image]
Term
< p > (3 definitions)
Definition
[image]
[image]
Term
< T >
Definition
[image]
Term
TISE
Definition
[image]
Term
Hamiltonian operator
Definition
[image]
Term
Calculating expectation values for < x > and < x^2 > shortcuts
Definition
odd function with x -> goes to 0
even function -> double and change bounds
Term
Uncertainty principle
Definition
[image]
Term
E_n for infinite square well
Definition
[image]
Term
ψ_n inside infinite well
Definition
[image]
Term
c_n
Definition
[image]

f(x) is the wavefunction (generic)
Term
[image]
Definition
1
Term
< H >
Definition
[image]
Term
Probability of states in well
Definition
|c_n|^2
Term
|a>
Definition
[image]
Term
inner product
Definition
[image]
Term
[image] in integral form
Definition
[image]
Term
Observables are represented by
Definition
hermitian operators
Term
Hermitian operator Q
Definition
[image]
Term
Eigenvalue eqn for Q operator
Definition
Q Ψ = q Ψ

Ψ = eigenfunction
q = eigenvalue
Term
Integration by parts formula
Definition
[image]
Term
Normalizeable eigenfunctions of a hermitian operator
Definition
are orthogonal (int f*g = 0) and their eigenvalues are real
Term
Expectation value of Q_op
Definition
[image]
Term
Hilbert Space
Definition
[image]
Term
[x,p] =
Definition
i hbar
Term
Generalized uncertainty principle
Definition
[image]
Term
The system is initially in state (a+), and you want probability of (b-)
Definition
[image]
Term
Allowed energy for a hydrogen atom
Definition
E_1/n^2
Term
Label spacial wavefunctions for hydrogen
Definition
[image]
Term
[image]
[image][image]
Definition
[image]
Term
[L^2, L_(x,y,z)]
Definition
[image]
Term
L^2, Lz eigenvalues/fn
Definition
[image]
Term
Pauli Matricies
Definition
[image]
Term
What quantum numbers are "allowed" for a given n?
Definition
l = 0,1,2,...,n -1
m_l = -l,-l+1,...,0,...,l-1,l
m_s = ±1/2
Term
Hamiltonian in perturbation theory
Definition
[image]
Term
Superscripts in perturbation theory
Definition
Order. Ex: H^0 first order
Term
First order energy correction
Definition
[image]

This is an integral H' * Psi^2

Can also be X (eigenstate)
Term
First order wavefunction correction
Definition
[image]
Term
Two non interacting particles wavefunction
Definition
[image]
[image]
Term
W matrix
Definition
[image]
Term
Energy using W matrix
Definition
Use formula
Term
J
Definition
L+S
Term
Zeeman Effect
Definition
Atom placed in uniform external B field
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